Let’s face it, we’ve all got a few gaps in our knowledge that we’d like to fill—the sort of things we know we should know, but never got round to learning. Perhaps you are never quite sure of exactly what caused World War 1 or were always embarrassed to admit you thought David Copperfield was a magician's autobiography. Maybe you used to be able to calculate the circumference of a circle but have forgotten, or always wanted to understand Freud’s theory of psychoanalysis. So, what better time to start learning than while on the loo? We’ve taken 50 subjects and summarized them into easily digestible chunks—the perfect length to educate while you defecate. Get ready to expand your mind while you contract your bowels and to get smart while you fart. It’s time to hit the books…